Driver/Operator Chapter 1 - Water Supply and Hose Equipment Vocabulary

Vocabulary flashcards covering fire hydrant classification, water supply distribution components, coupling lugs, valves, and hose maintenance equipment based on Driver/Operator Chapter 1.

Fire Hydrant System Components

An underground and above-ground infrastructure connecting a water supply main to a fire hydrant, consisting of a supply main, gate valve, valve box, hydrant feeder, joint resting gland, gravel drain, and concrete thrust block.

Class C Fire Hydrant

A fire hydrant with an available water flow rate of less than $500\,gpm$ ($1893\,L$) at $20\,psi$ ($140\,kPa$), designated by a red color code.

Class B Fire Hydrant

A fire hydrant with an available water flow rate of $500\text{--}999\,gpm$ ($1893\text{--}3782\,L$) at $20\,psi$ ($140\,kPa$), designated by an orange color code.

Class A Fire Hydrant

A fire hydrant with an available water flow rate of $1000\text{--}1499\,gpm$ ($3785\text{--}5674\,L$) at $20\,psi$ ($140\,kPa$), designated by a green color code.

Class AA Fire Hydrant

A fire hydrant with an available water flow rate of $1500\,gpm$ ($5678\,L$) and higher at $20\,psi$ ($140\,kPa$), designated by a light blue color code.

Pin Lug

A type of hose coupling lug shaped like a cylindrical pin protruding from the coupling exterior, requiring a spanner wrench for tightening or loosening.

Recessed Lug

A hose coupling lug designed with shallow indentations on the coupling collar to prevent hose snags when dragging.

Rocker Lug

A rounded hose coupling lug with sloped edges designed to slide easily over obstacles during hose advancement without catching.

Gate Valve

A water control valve that utilizes a flat or wedge-shaped gate operated by a threaded stem to open or restrict water flow.

Hose Jacket

A repair device fitted around a damaged or rupture-prone section of a pressurized hose to temporarily seal leaks and allow continued water flow.